Graphite Carbon with a Nanofiber Structure Derived from Oil Palm Fiber Biomass for Active Material for Supercapacitor Cells

Biomass-based renewable energy sources have attracted the attention of researchers due to the long-term and large-scale use of fossil fuels globally. In this research, biomass from Oil Palm Fiber (OPF) was identified to be processed into active material for supercapacitor cells. Activation with the help of chemical regens from KOH, NiCl₂, and ZnCl₂ is carried out to obtain superior quality OPF active materials. Double pyrolysis was also carried out, carbonization of N₂ at 600 °C and physical activation of CO₂ at 800 °C. The graphite structure is obtained with nanofibers and nanospheres and nanopores with anSSAof 591 m²/g. These properties enable the OPF-N active material to obtain a specific capacitance of up to 255 F/g under 1M H₂SO₄ acid conditions with a scan rate of 1 mV/s. This research provides a new approach and scientific basis for the construction, design, and application of green energy storage devices.